TNPSC Thervupettagam

World Hydrography Day 2025 - June 21

June 25 , 2025 14 hrs 0 min 6 0
  • This day emphasizes the importance of understanding the physical features of water bodies such as oceans, seas, and rivers.
  • It was officially established by the United Nations in 2005 to promote the global awareness of hydrography.
  • The day also commemorates the anniversary of the International Hydrographic Organisation (IHO).
  • The IHO was also originally founded in 1921 as the International Hydrographic Bureau to support safe navigation and marine conservation.
  • The theme for 2025 is “Seabed Mapping: Enabling Ocean Action”.

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